This is a must-read book. Ignorance concerning this matter is quite prevalent and the negative effects are vast.
A needed study of the most quoted passage in Scripture, by Scripture itself. Trust me, your hopes for this earth and the Kingdom of God will be elevated. In this world - Jesus and his gospel shall surely prevail. Never doubt it.
The author - is he competent to write such a book? Yes indeed, he is one of a few scholars who has compiled a complete concordance of the New Testament.